Switch FET geometric modeling

Click here to go to our page on lumped element model for switch FETs

Our lumped element model does not provide a complete prediction of how a switch FET will operate in a MMIC design.  The drain and source fingers add distributed properties to a switch FET.  How do you take care of that?

Start by reading this patent application:

 US20090119072. patent application "Electromagnetic modeling of switch FETs"

Next: we will tell you the story of this patent application, and tell you a few things it ignores...